Brunswick 12-862944-000 User manual

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September, 2009 12-900352-000
© Brunswick Bowling & Billiards Corp. 2009. All rights reserved.
RUBBER BUMPER
WASHER
JAM NUTS
Ball Lift Rod Spring Conversion
12-862944-000
Fits all Brunswick Pinsetters
Packaging
Item
No. Qty. Description
1 1 Ea. Arbor Stem
2 1 Ea. Threaded Stem
3 1 Ea. Nut, Spring Retainer
4 1 Ea. Spring
5 1 Ea. Jam Nut 7/8-14 (not illustrated)
Installation
WARNING! Remove all power from pinsetter by throwing main
breaker and disconnecting power cord at control box.
1. Remove jam nuts (P/N 11-125208-000), washer (P/N 12-400139-004) and rubber bumpers
(P/N 12-400123-000). Retain this hardware including ange bushing (P/N 12-400803-000) for
future use. Remove the old spring.
2. Clean spring rod and hardware using machine cleaner and inspect (if badly worn, replace them).
Lube spring rod, bushing and wear surfaces with grease.
Figure 1

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3. Install Jam Nut 7/8-14 and Spring Retainer Nut onto Threaded Stem.
4. Install the Threaded Stem and nut assembly, then the Spring and next the Arbor Stem onto Spring
Rod.
5. Replace bushing (P/N12-400803-000) and reassemble rubber bumper, washer and jam nuts.
Adjustments
1. Place a standard size ball between the ball lift rods and ball elevator wheel and manually rotate
the ball elevator wheel until the ball wedges itself, thus lifting the ball lift rods. Loosen the jam
nut and turn the adjusting screw on the clapper block until the bottom of the screw is 1/2 inch (±
1/16) from the surface of the lower clapper block stem. Refer to Figure 2.
Figure 2
2. Place a standard size ball between the lift rods and bail elevator wheel near the top of the lift
rods. Loosen jam nut (P/N 11-125208-001) and turn the adjusting nut on the spring rod until a
3/8” (+1/16-0) gap is obtained between the rubber bumper and the ball trip bracket. Tighten the
jam nut against the adjusting nut. Refer to Figure 1.
3. To increase or decrease riser rod tension on the ball, simply turn the Spring Retainer Nut to ob-
tain the proper pressure (ideally this is the minimum pressure required to elevate an oily ball).
IMPORTANT: Do not allow the spring to reach less than 7/16”
open; the spring will not function at solid height.
4. Place a standard size ball at the lower center of the ball wheel so that it is resting against the rear
ball lift rod. With the pit shaker in its rear most position, there should be 1/16” minimum clear-
ance between the lower portion of the ball and the rear edge of the pit shaker clamping plate.
LOWER CLAPPER BLOCK STEM
(GAP 1/16)
+
-

3
5. If the clearance is less than 1/16”, check the elevator guide roller adjustment, pit shaker adjust-
ment and elevator frame adjustments. If all the above adjustments are correct, the ball lift rods
must be raised to increase the dimension. To raise the ball lift rods, loosen the lock nut on the
upper clapper block and turn the adjusting screw in until the 1/16” dimension is obtained; tighten
the jam nut. Refer to Figure 3.
Figure 3
BALL WHEEL